45840187 has 4 divisors (see below), whose sum is σ = 46037160. Its totient is φ = 45643216.

The previous prime is 45840167. The next prime is 45840199. The reversal of 45840187 is 78104854.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 45840187 - 2¹¹ = 45838139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45840167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98137 + ... + 98602.

It is an arithmetic number, because the mean of its divisors is an integer number (11509290).

Almost surely, 2^45840187 is an apocalyptic number.

45840187 is a deficient number, since it is larger than the sum of its proper divisors (196973).

45840187 is a wasteful number, since it uses less digits than its factorization.

45840187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196972.

The product of its (nonzero) digits is 35840, while the sum is 37.

The square root of 45840187 is about 6770.5381617712. The cubic root of 45840187 is about 357.8893653329.

The spelling of 45840187 in words is "forty-five million, eight hundred forty thousand, one hundred eighty-seven".